Created with <3 with dartpad.dev.
Created
November 21, 2023 14:44
-
-
Save Phinome/42d99caf50692c52b18dcca5e11ebe11 to your computer and use it in GitHub Desktop.
Counter example
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file | |
| // for details. All rights reserved. Use of this source code is governed by a | |
| // BSD-style license that can be found in the LICENSE file. | |
| import 'package:flutter/material.dart'; | |
| void main() => runApp(MyApp()); | |
| class MyApp extends StatelessWidget { | |
| @override | |
| Widget build(BuildContext context) { | |
| return MaterialApp( | |
| title: 'Flutter Demo', | |
| debugShowCheckedModeBanner: false, | |
| theme: ThemeData( | |
| colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple), | |
| useMaterial3: true, | |
| ), | |
| home: const MyHomePage(title: 'Flutter Demo Home Page'), | |
| ); | |
| } | |
| } | |
| class MyHomePage extends StatefulWidget { | |
| final String title; | |
| const MyHomePage({ | |
| Key? key, | |
| required this.title, | |
| }) : super(key: key); | |
| @override | |
| State<MyHomePage> createState() => _MyHomePageState(); | |
| } | |
| class _MyHomePageState extends State<MyHomePage> { | |
| Widget _buildExample1(BuildContext context) { | |
| return Container(color: Colors.red); | |
| } | |
| Widget _buildExample2(BuildContext context) { | |
| return Container(width: 100, height: 100, color: Colors.red); | |
| } | |
| Widget _buildExample3(BuildContext context) { | |
| return Center( | |
| child: ConstrainedBox( | |
| constraints: const BoxConstraints( | |
| minWidth: 70, | |
| minHeight: 70, | |
| maxWidth: 150, | |
| maxHeight: 150, | |
| ), | |
| child: Container(color: Colors.red, width: 10, height: 10), | |
| ), | |
| ); | |
| } | |
| @override | |
| Widget build(BuildContext context) { | |
| return Scaffold( | |
| appBar: AppBar( | |
| backgroundColor: Theme.of(context).colorScheme.inversePrimary, | |
| title: Text(widget.title), | |
| ), | |
| body: Center( | |
| child: Column( | |
| mainAxisAlignment: MainAxisAlignment.center, | |
| children: [ | |
| _buildExample1(context), | |
| _buildExample2(context), | |
| _buildExample3(context), | |
| ], | |
| ), | |
| ), | |
| ); | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment